Bearing is shielded, pre-lubed and will provide years of trouble free service on your fuel pump.
Measurements for the 15mm bearing are 1.260" O.D. x .350" thick with an .590" I.D.
Measurements for the 11mm bearing are 1.260" O.D. x .393" thick with an .435" I.D.
Bearings are sold individually and racer can pick bearing size from drop down menu. Picture 1 and 2 are of 15mm bearing, picture 3 and 4 are of 11mm bearing.